加油后，如有可能，要等多长时间后进行放水检查？A、5分钟 B、10分钟 C、15分钟 D、

麻黄素等属于重点监控物品范围的易制毒化学品，由国务院商务主管部门会同国务院有关部门核定的企业进口、出口。

(一)

In October 1961 at Crowley Field in Cincinnati Ohio, an old deaf gentleman named William E. Hoy stood up to throw the first hall of the World Series. Most people at Crowley Field on that day probably did not remember Hoy because he had retired from professional baseball 58 years earlier in 1903. However he had been an outstanding player and the deaf people still talk about him and his years in baseball.

William E. Hoy was born in Houckstown Ohio on May 23, 1862. He became deaf when he was two years old. He attended the Columbus Ohio School for the deal After graduation he started playing baseball while working as a shoemaker.

Hoy began playing professional baseball in 1886 for Oshkosh (Wisconsin) of the Northwestern League. In 1888 he started as an outfielder with the old Washington Senators. His small figure and speed made him an outstanding base runner. He was very good at stealing bases during his career. In the 1888 major league season he stole 82 bases. He was also the Senators’ leading hitter in 1888. Hoy was clever and he threw right-handed and batted left-handed. On June 19, 1889 he threw out three batters at the plate from his outfield position.

The arm signals used by judges today to show balls and strikes began because of Hoy. The judge lifted his right arm to show that the pitch was a strike and his left arm to signal that it was a ball.

For many years people talked about Hoy’s last ball game in 1903. He was playing for Los Angeles of the Pacific Coast Winter League. It was a memorable game because Hoy hit a wonderful ball which won the game. It was a very foggy day and therefore very hard to see the ball. In the ninth inning with two men out, Hoy managed to catch a fly ball to make the third out in spite of the fog. Los Angeles defeated their opposition and won the game.

After he retired, Hoy stayed busy. He ran a dairy farm near Cincinnati for 20 years. He also became a public speaker and traveled giving speeches. Until a few years before his death he took 4—10 mile walks several mornings a week. On December 15, 1961 William Hoy died at the age of 99.

This passage is mainly about（）.

A．a deaf player devoted to the game of baseball

B．baseball game rules and important players

C．the rise in the social position of the deaf people

D．where the baseball judge hand signals came from

酸洗后的管道和设备，必须迅速进行（）。

A．钝化

B．预膜

C．脱脂

D．清洗

按照食品添加剂对产品质量的影响程度及其本身质量问题的隐密程度分为A.B两类，下列物质属于A类的是（）。

A、蜂蜜

B、甘草粉

C、米醋

D、乳酸

某企业现着手编制2010年6月的现金收支计划。预计2010年6月月初现金余额为12万元，月初应收账款6万元，预计月内可收回75%，本月销货75万元，预计月内收款比例为50%，本月采购材料12万元，预计月内付款60%，月初应付款余额0.75万元需在本月内全部付清，月内以现金支付工资12.6万元，本月制造费用等间接费用付现24万元，其他经营性现金支出1.2万元，购买设备支付现金12万元。企业现金不足时，可向银行借款，借款金额为1万元的倍数，现金多余时可购买有价证券。要求月末现金余额不低于3万元。

计算现金余缺。